EP0284773A2 - Apparatus for enlarging tube ends - Google Patents

Apparatus for enlarging tube ends Download PDF

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Publication number
EP0284773A2
EP0284773A2 EP88102680A EP88102680A EP0284773A2 EP 0284773 A2 EP0284773 A2 EP 0284773A2 EP 88102680 A EP88102680 A EP 88102680A EP 88102680 A EP88102680 A EP 88102680A EP 0284773 A2 EP0284773 A2 EP 0284773A2
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EP
European Patent Office
Prior art keywords
die
expansion sleeve
expansion
tube
cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88102680A
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German (de)
French (fr)
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EP0284773B1 (en
EP0284773A3 (en
Inventor
Erich Büchele
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Individual
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Publication date
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Publication of EP0284773A2 publication Critical patent/EP0284773A2/en
Publication of EP0284773A3 publication Critical patent/EP0284773A3/en
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Publication of EP0284773B1 publication Critical patent/EP0284773B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/02—Enlarging

Definitions

  • the innovation relates to a device for expanding pipe ends according to the preamble of claim 1.
  • Such a device is described in DE-OS 1 918 815.
  • the wedge-shaped punch is arranged at the end of a piston.
  • a holder is connected, which consists of wedge pieces, which lie against the outer wall of the pipe at a distance from the pipe end.
  • a disadvantage of this known device is that when the punch is pressed into the pipe end, the pipe is axially displaced at least until the wedges of the holder engage. If the friction between the outer tube wall and the wedge pieces is relatively low, for example if the outer tube wall has a layer of grease, then the tube is displaced over the entire path of the piston stroke, so that the punch does not press into the end of the tube.
  • the object is to improve the device in such a way that the tube has a secure hold during expansion and the expansion is carried out in a controlled manner.
  • the pipe end 8 to be expanded is surrounded by a die 1, which is divided into two in the longitudinal direction and has a recess 10 in the region of the end 9 of the pipe.
  • the two-part die 1 is arranged in a die holder 11 which is connected to a frame 12.
  • the recess 10 determines the outer shape of the widening to be provided at the end 9.
  • the frame carries a cylinder 13, which in turn is connected to an expansion sleeve 4.
  • This expansion sleeve 4 is inserted with its head 14 into the tube 8 such that its expansion head 14 comes to rest against the inner wall of the tube 8.
  • the expansion head 14 is located in the area of the die 1 at the level of the area of the die 1, which adjoins the recess 10.
  • expansion mandrel 3 which is conical in the area of the expansion head 14.
  • This expanding mandrel 3 is connected to the piston 15 inside the cylinder 13. If a pressure medium is applied to the left cylinder chamber of the cylinder 13, the expanding mandrel 3 executes a movement to the right, in which the conical wedge of the expanding mandrel 3 spreads the expanding head 14 , which is provided with axially extending slots 16 for this purpose.
  • This expansion head 14 thus comes to rest against the inner wall of the tube 8, which is held in this way between the die 1 and the expansion head 14.
  • the plunger 5 which has an axial bore for this purpose, is displaceably arranged.
  • This stamp 5 is fastened to a guide housing 17, in which the cylinder 13 is slidably arranged.
  • the guide housing 17 has a slot 18 through which the arm 19 of the frame 12 is guided, to which the cylinder 13 is attached.
  • the right cylinder chamber of the cylinder 22 is pressurized with a pressure medium, whereby the piston rod 20 moves the plunger 5 in the direction of the tube end 9 via the guide housing 17.
  • the punch 5 is pressed into the tube end 9 in this way, this being deformed against the surface of the recess 10.
  • the punch 5 has a cylindrical projection 7, the diameter of which is smaller than the inside diameter of the pipe.
  • the die 1, the expansion sleeve 4 and the punch 5 are interchangeable, so that the device can be adapted to different pipe diameters and pipe wall thicknesses.

Abstract

The apparatus for enlarging tube ends (9) has a die (1) which surrounds the tube end and has a recess (10) in accordance with the form of enlargement to be applied. Located in the interior of the die (1) is an expanding sleeve (4, 14) which can be expanded by an expanding mandrel (3) which can be displaced by a piston (15). When the expanding mandrel (3) is actuated, the tube (8) can be clamped in place between the die (1) and the expanding sleeve (4, 14). A punch (5) can be displaced on the expanding sleeve (4, 14). The tube end (9) is expanded when the punch (5) is displaced in the direction of the recess (10). <IMAGE>

Description

Die Neuerung betrifft eine Vorrichtung zum Aufweiten von Rohrenden nach dem Oberbegriff des Anspruches 1.The innovation relates to a device for expanding pipe ends according to the preamble of claim 1.

Eine solche Vorrichtung ist in der DE-OS 1 918 815 be­schrieben. Bei dieser Vorrichtung ist am Ende eines Kolbens der keilförmige Stempel angeordnet. Mit dem Zylinder des Kolbens ist eine Halterung verbunden, die aus Keilstücken besteht, welche sich gegen die Außen­wand des Rohres im Abstand vom Rohrende anlegen.Such a device is described in DE-OS 1 918 815. In this device, the wedge-shaped punch is arranged at the end of a piston. With the cylinder of the piston a holder is connected, which consists of wedge pieces, which lie against the outer wall of the pipe at a distance from the pipe end.

Bei dieser bekannten Vorrichtung ist nachteilig, daß bei Einpressen des Stempels in das Rohrende das Rohr zumindest so weit axial verschoben wird, bis die Keile der Halterung greifen. Ist die Reibung zwischen der Rohraußenwand und den Keilstücken relativ gering, bei­spielsweise wenn die Rohraußenwand eine Fettschicht aufweist, dann wird das Rohr über den gesamten Weg des Kolbenhubs verschoben, so daß also der Stempel nicht in das Rohrende einpreßt.A disadvantage of this known device is that when the punch is pressed into the pipe end, the pipe is axially displaced at least until the wedges of the holder engage. If the friction between the outer tube wall and the wedge pieces is relatively low, for example if the outer tube wall has a layer of grease, then the tube is displaced over the entire path of the piston stroke, so that the punch does not press into the end of the tube.

Ein weiterer Nachteil der bekannten Vorrichtung ist darin zu sehen, daß im Bereich der Aufweitung des Rohr­endes die Außenseite des Rohres nicht geführt ist und somit eine ungleichmäßige Aufweitung über den Umfang des Rohres stattfinden kann.Another disadvantage of the known device can be seen in the fact that the outside of the tube is not guided in the region of the widening of the tube end and thus an uneven widening can take place over the circumference of the tube.

Es besteht die Aufgabe, die Vorrichtung so zu verbessern, daß das Rohr beim Aufweiten einen sicheren Halt hat und die Aufweitung kontrolliert durchgeführt wird.The object is to improve the device in such a way that the tube has a secure hold during expansion and the expansion is carried out in a controlled manner.

Gelöst wird diese Aufgabe mit den kennzeichnenden Merk­malen des Anspruches 1. Vorteilhafte Ausgestaltungen sind den Unteransprüchen entnehmbar.This object is achieved with the characterizing features of claim 1. Advantageous refinements can be found in the subclaims.

Ein Ausführungsbeispiel wird nachfolgend anhand der Zeichnungen näher erläutert. Es zeigen:

  • Fig. 1 einen Längsschnitt durch die Vorrichtung und
  • Fig. 2 einen Schnitt längs der Linie II-II in Fig.1.
An embodiment is explained below with reference to the drawings. Show it:
  • Fig. 1 shows a longitudinal section through the device and
  • Fig. 2 shows a section along the line II-II in Fig.1.

Das aufzuweitende Rohrende 8 wird von einer in Längs­richtung zweigeteilten Matrize 1 umgeben, die im Bereich des Endes 9 des Rohres eine Ausnehmung 10 aufweist. Die zweigeteilte Matrize 1 ist angeordnet in einer Matrizen­halterung 11, die mit einem Gestell 12 verbunden ist. Die Ausnehmung 10 bestimmt die Außenform der am Ende 9 anzubringenden Aufweitung.The pipe end 8 to be expanded is surrounded by a die 1, which is divided into two in the longitudinal direction and has a recess 10 in the region of the end 9 of the pipe. The two-part die 1 is arranged in a die holder 11 which is connected to a frame 12. The recess 10 determines the outer shape of the widening to be provided at the end 9.

Im axialen Abstand zum Ende 9 des Rohres 8 trägt das Gestell einen Zylinder 13, der seinerseits mit einer Spreizhülse 4 verbunden ist. Diese Spreizhülse 4 ist mit ihrem Kopf 14 in das Rohr 8 eingeführt, derart, daß ihr Spreizkopf 14 zur Anlage an die Innenwand des Rohres 8 kommt. Hierbei befindet sich der Spreizkopf 14 im Bereich der Matrize 1 in Höhe des Bereichs der Matrize 1, der sich an die Ausnehmung 10 anschließt.At an axial distance from the end 9 of the tube 8, the frame carries a cylinder 13, which in turn is connected to an expansion sleeve 4. This expansion sleeve 4 is inserted with its head 14 into the tube 8 such that its expansion head 14 comes to rest against the inner wall of the tube 8. Here, the expansion head 14 is located in the area of the die 1 at the level of the area of the die 1, which adjoins the recess 10.

Im Inneren der Spreizhülse 4 verläuft ein Spreizdorn 3, der im Bereich des Spreizkopfes 14 konisch ausge­bildet ist. Dieser Spreizdorn 3 ist verbunden mit dem Kolben 15 im Inneren des Zylinders 13. Wird die linke Zylinderkammer des Zylinders 13 mit einem Druckmedium beaufschlagt, dann führt der Spreizdorn 3 eine Bewegung nach rechts aus, bei welcher der konische Keil des Spreiz­dorns 3 den Spreizkopf 14 aufspreizt, der zu diesem Zweck mit axial verlaufenden Schlitzen 16 versehen ist. Dieser Spreizkopf 14 kommt somit zur Anlage an die Innen­wand des Rohres 8, das auf diese Weise zwischen der Matrize 1 und dem Spreizkopf 14 festgehalten wird.In the interior of the expansion sleeve 4 there is an expansion mandrel 3 which is conical in the area of the expansion head 14. This expanding mandrel 3 is connected to the piston 15 inside the cylinder 13. If a pressure medium is applied to the left cylinder chamber of the cylinder 13, the expanding mandrel 3 executes a movement to the right, in which the conical wedge of the expanding mandrel 3 spreads the expanding head 14 , which is provided with axially extending slots 16 for this purpose. This expansion head 14 thus comes to rest against the inner wall of the tube 8, which is held in this way between the die 1 and the expansion head 14.

Auf dem sich an den Spreizkopf 14 anschließenden Bereich verminderten Durchmessers der Spreizhülse 4 ist ver­schiebbar angeordnet der Stempel 5, der zu diesem Zweck eine Axialbohrung aufweist. Dieser Stempel 5 ist be­festigt an einem Führungsgehäuse 17, in welchem verschieb­bar der Zylinder 13 angeordnet ist. Das Führungsgehäuse 17 weist einen Schlitz 18 auf, durch den der Arm 19 des Gestells 12 geführt ist, an dem der Zylinder 13 befestigt ist.On the area of reduced diameter of the expansion sleeve 4 adjoining the expansion head 14, the plunger 5, which has an axial bore for this purpose, is displaceably arranged. This stamp 5 is fastened to a guide housing 17, in which the cylinder 13 is slidably arranged. The guide housing 17 has a slot 18 through which the arm 19 of the frame 12 is guided, to which the cylinder 13 is attached.

Gegen das dem Stempel 5 abgewandte Ende des Führungs­gehäuses 17 steht die Kolbenstange 20 eines Kolbens 21 an, der in einem weiteren Zylinder 22 angeordnet ist, der ebenfalls mit dem Gestell 12 verbunden ist.The piston rod 20 of a piston 21, which is arranged in a further cylinder 22, which is also connected to the frame 12, bears against the end of the guide housing 17 facing away from the plunger 5.

Ist der vorerwähnte Spannvorgang zum Festhalten des Rohres 8 zwischen der Matrize 1 und dem Spreizkopf 14 beendet, dann wird die rechte Zylinderkammer des Zylinders 22 mit einem Druckmedium beaufschlagt, wodurch die Kolben­stange 20 über das Führungsgehäuse 17 den Stempel 5 in Richtung des Rohrendes 9 bewegt. Der Stempel 5 wird auf diese Weise in das Rohrende 9 eingepreßt, wobei dieses gegen die Fläche der Ausnehmung 10 verformt wird. Um das Einführen des Stempels 5 in das Rohrende 9 zu erleichtern, weist der Stempel 5 einen zylindrischen Ansatz 7 auf, dessen Durchmesser geringer ist als der Rohrinnendurchmesser.If the above-mentioned clamping process for holding the tube 8 between the die 1 and the expansion head 14 has ended, then the right cylinder chamber of the cylinder 22 is pressurized with a pressure medium, whereby the piston rod 20 moves the plunger 5 in the direction of the tube end 9 via the guide housing 17. The punch 5 is pressed into the tube end 9 in this way, this being deformed against the surface of the recess 10. In order to facilitate the insertion of the punch 5 into the pipe end 9, the punch 5 has a cylindrical projection 7, the diameter of which is smaller than the inside diameter of the pipe.

Die Matrize 1, die Spreizhülse 4 und der Stempel 5 sind austauschbar, so daß die Vorrichtung an unterschiedliche Rohrdurchmesser und Rohrwandstärken anpaßbar ist.The die 1, the expansion sleeve 4 and the punch 5 are interchangeable, so that the device can be adapted to different pipe diameters and pipe wall thicknesses.

Claims (9)

1. Vorrichtung zum Aufweiten von Rohrenden (9) mittels eines in das Rohrende (9) einpreßbaren Stempels (5), der etwa keilförmig ausgebildet ist und von einem druck­mittelbetätigten Kolben (21) bewegt wird, wobei das Rohr (8) während des Aufweitvorgangs von einer Halterung gehalten wird, dadurch gekennzeichnet, daß eine das Rohrende (9) umgebende Matrize (1) vor­gesehen ist, die im Bereich der anzubringenden Aufwei­tung eine Ausnehmung (10) aufweist, in die der Stempel (5) einfährt und die Halterung aus einer Spreizhülse (4, 14) besteht, die im Rohrinneren anschließend an den Bereich der Matrizenausnehmung (10) gegen die Rohr­innenwand aufspreizbar ist und damit das Rohr (8) zwischen der Spreizhülse (4, 14) und der Matrize (1) festge­klemmt wird.1. Device for expanding pipe ends (9) by means of a punch (5) which can be pressed into the pipe end (9) and is approximately wedge-shaped and is moved by a pressure-operated piston (21), the pipe (8) during the expansion process A holder is held, characterized in that a die (1) surrounding the tube end (9) is provided, which has a recess (10) in the area of the expansion to be fitted, into which the punch (5) moves and the holder from an expansion sleeve (4, 14), which can then be expanded in the interior of the tube to the area of the die recess (10) against the tube inner wall and thus the tube (8) is clamped between the expansion sleeve (4, 14) and the die (1). 2. Vorrichtung nach Anspruch 1, dadurch gekenn­zeichnet, daß im Inneren der Spreizhülse (4, 14) ein konischer Spreizdorn (3) angeordnet ist, der relativ zur Spreizhülse (4, 14) verschiebbar ist.2. Device according to claim 1, characterized in that in the interior of the expansion sleeve (4, 14) a conical expanding mandrel (3) is arranged, which is displaceable relative to the expansion sleeve (4, 14). 3. Vorrichtung nach Anspruch 1 oder 2, dadurch ge­kennzeichnet, daß die Spreizhülse (4, 14) in Richtung des Stempels (5) verläuft, außerhalb ihres Spreizkopfes (14) einen Bereich verminderten Durch­messers aufweist und auf dem Bereich verminderten Durchmessers der eine Führungsbohrung aufweisende Stempel (5) ge­führt ist.3. Apparatus according to claim 1 or 2, characterized in that the expansion sleeve (4, 14) extends in the direction of the stamp (5), outside of its expansion head (14) has an area of reduced diameter and on the area of reduced diameter which has a guide bore Stamp (5) is guided. 4. Vorrichtung nach Anspruch 2 oder 3, dadurch ge­kennzeichnet, daß das dem Spreizkopf (14) der Spreizhülse (4) abgewandte Ende des Spreizdorns (3) mit einem Kolben (15) verbunden ist, dessen stationärer Zylinder (13) mit der Spreizhülse (4, 14) verbunden ist.4. Apparatus according to claim 2 or 3, characterized in that the expansion head (14) of the expansion sleeve (4) facing away from the expanding mandrel (3) is connected to a piston (15) whose stationary cylinder (13) with the expansion sleeve ( 4, 14) is connected. 5. Vorrichtung nach Anspruch 4, dadurch gekenn­zeichnet, daß der Zylinder (13) von einem Führungs­gehäuse (17) umgeben ist, das an einem Ende den Stempel (5) trägt und gegen dessen anderes Ende der den Stempel (5) betätigende Kolben (21) wirkt.5. The device according to claim 4, characterized in that the cylinder (13) is surrounded by a guide housing (17) which carries the plunger (5) at one end and against the other end of the plunger (5) actuating piston (21st ) works. 6. Vorrichtung nach Anspruch 4 oder 5, dadurch ge­kennzeichnet, daß die Matrize (1) und der mit der Spreizhülse (4, 14) verbundene Zylinder von einem gemeinsamen Gestell (12) getragen werden6. Apparatus according to claim 4 or 5, characterized in that the die (1) and the cylinder connected to the expansion sleeve (4, 14) are carried by a common frame (12) 7. Vorrichtung nach Anspruch 6, dadurch gekenn­zeichnet, daß der den Zylinder (13) tragende Teil (19)des Gestells (12) durch einen Schlitz (18) im Führungsgehäuse (17) verläuft.7. The device according to claim 6, characterized in that the cylinder (13) supporting part (19) of the frame (12) through a slot (18) in the guide housing (17). 8. Vorrichtung nach Anspruch 6 oder 7, dadurch ge­kennzeichnet, daß das Gestell (12) einen weiteren Zylinder (22) trägt, in welchem der den Stempel (5) betätigende Kolben (21) angeordnet ist.8. Apparatus according to claim 6 or 7, characterized in that the frame (12) carries a further cylinder (22) in which the piston (21) actuating the plunger (5) is arranged. 9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Matrize (1) zwei­geteilt ist und von einer Matrizenhalterung (11) ge­halten wird, die ihrerseits mit dem Gestell (12) ver­bunden ist.9. Device according to one of claims 1 to 8, characterized in that the die (1) is divided into two and is held by a die holder (11) which in turn is connected to the frame (12).
EP88102680A 1987-02-26 1988-02-24 Apparatus for enlarging tube ends Expired - Lifetime EP0284773B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8702934U DE8702934U1 (en) 1987-02-26 1987-02-26
DE8702934U 1987-02-26

Publications (3)

Publication Number Publication Date
EP0284773A2 true EP0284773A2 (en) 1988-10-05
EP0284773A3 EP0284773A3 (en) 1990-02-28
EP0284773B1 EP0284773B1 (en) 1991-10-02

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EP88102680A Expired - Lifetime EP0284773B1 (en) 1987-02-26 1988-02-24 Apparatus for enlarging tube ends

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EP (1) EP0284773B1 (en)
DE (2) DE8702934U1 (en)
ES (1) ES2025714T3 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2652015A1 (en) * 1989-09-15 1991-03-22 Caterpillar Inc METHOD AND APPARATUS FOR EXPANSION OF TUBES.
DE19704131A1 (en) * 1997-02-04 1998-08-06 Ex Cell O Gmbh Fracture separation method and apparatus
WO1999038712A2 (en) * 1998-01-30 1999-08-05 Farkas Zoltan Procedure for the production of the hub sleeeve of two-wheeled vehicles, especially bicycles
GB2377902A (en) * 2001-07-20 2003-01-29 Itt Mfg Enterprises Inc Forming tool
WO2007065955A1 (en) * 2005-12-09 2007-06-14 Rennsteig Werkzeuge Gmbh Device for expanding pipe ends
WO2007129035A1 (en) * 2006-05-04 2007-11-15 Caldervale Technology Limited Device for preparing pipe ends for jointing
EP2957363A1 (en) * 2014-06-16 2015-12-23 SMS Meer GmbH Mechanical tube expander
RU2633676C1 (en) * 2016-09-26 2017-10-16 Публичное акционерное общество "Уфимское моторостроительное производственное объединение" Roll bending device for hollow parts
EP3391979A1 (en) * 2017-04-21 2018-10-24 Eaton Intelligent Power Limited Arrangement for working a tube end
CN110479826A (en) * 2019-07-26 2019-11-22 中国航发贵州黎阳航空动力有限公司 A kind of tooling for the flaring of aero-engine Thin-Wall Outer Casing sealing device
CN110605338A (en) * 2019-10-09 2019-12-24 格力电器（重庆）有限公司 Automatic throat device that expands of copper pipe
US10940521B2 (en) 2017-06-29 2021-03-09 Milwaukee Electric Tool Corporation Swage tool
CN113369394A (en) * 2021-05-21 2021-09-10 新乡市博威机械有限公司 Horizontal type pipe expander with efficient cooling mechanism

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US2266795A (en) * 1938-04-29 1941-12-23 Arthur L Parker Apparatus for preparing flared end tubes
US2352912A (en) * 1941-03-31 1944-07-04 Parker Appliance Co Tube expanding and flaring machine
US2394841A (en) * 1943-06-16 1946-02-12 Kenly C Bugg Flanging device
US2464510A (en) * 1945-01-10 1949-03-15 Parker Appliance Co Tube flaring machine
US2941568A (en) * 1958-04-21 1960-06-21 Gen Dynamics Corp Tube flaring machine
US3200627A (en) * 1961-12-12 1965-08-17 Baldwin Lima Hamilton Corp Pipe flaring or belling
US3412592A (en) * 1965-10-22 1968-11-26 Olin Mathieson Pipe gripping and flaring apparatus
DE1918815A1 (en) * 1969-04-14 1970-10-15 Guenter Zimmer Cold-forming pipe ends

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2266795A (en) * 1938-04-29 1941-12-23 Arthur L Parker Apparatus for preparing flared end tubes
US2352912A (en) * 1941-03-31 1944-07-04 Parker Appliance Co Tube expanding and flaring machine
US2394841A (en) * 1943-06-16 1946-02-12 Kenly C Bugg Flanging device
US2464510A (en) * 1945-01-10 1949-03-15 Parker Appliance Co Tube flaring machine
US2941568A (en) * 1958-04-21 1960-06-21 Gen Dynamics Corp Tube flaring machine
US3200627A (en) * 1961-12-12 1965-08-17 Baldwin Lima Hamilton Corp Pipe flaring or belling
US3412592A (en) * 1965-10-22 1968-11-26 Olin Mathieson Pipe gripping and flaring apparatus
DE1918815A1 (en) * 1969-04-14 1970-10-15 Guenter Zimmer Cold-forming pipe ends

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2652015A1 (en) * 1989-09-15 1991-03-22 Caterpillar Inc METHOD AND APPARATUS FOR EXPANSION OF TUBES.
DE19704131A1 (en) * 1997-02-04 1998-08-06 Ex Cell O Gmbh Fracture separation method and apparatus
DE19704131C2 (en) * 1997-02-04 2003-01-02 Ex Cell O Gmbh Fracture separation method and apparatus
WO1999038712A2 (en) * 1998-01-30 1999-08-05 Farkas Zoltan Procedure for the production of the hub sleeeve of two-wheeled vehicles, especially bicycles
WO1999038712A3 (en) * 1998-01-30 1999-10-28 Zoltan Farkas Procedure for the production of the hub sleeeve of two-wheeled vehicles, especially bicycles
GB2377902A (en) * 2001-07-20 2003-01-29 Itt Mfg Enterprises Inc Forming tool
GB2377902B (en) * 2001-07-20 2004-02-11 Itt Mfg Enterprises Inc Forming tool
US6751996B2 (en) 2001-07-20 2004-06-22 Itt Manufacturing Enterprises, Inc. Dynamic punch
WO2007065955A1 (en) * 2005-12-09 2007-06-14 Rennsteig Werkzeuge Gmbh Device for expanding pipe ends
US8057215B2 (en) 2006-05-04 2011-11-15 Caldervale Technology Limited Device for preparing pipe ends for jointing
WO2007129035A1 (en) * 2006-05-04 2007-11-15 Caldervale Technology Limited Device for preparing pipe ends for jointing
EP2957363A1 (en) * 2014-06-16 2015-12-23 SMS Meer GmbH Mechanical tube expander
RU2633676C1 (en) * 2016-09-26 2017-10-16 Публичное акционерное общество "Уфимское моторостроительное производственное объединение" Roll bending device for hollow parts
EP3391979A1 (en) * 2017-04-21 2018-10-24 Eaton Intelligent Power Limited Arrangement for working a tube end
CN108724040A (en) * 2017-04-21 2018-11-02 伊顿智能动力有限公司 Device for processing tube end
US10814458B2 (en) 2017-04-21 2020-10-27 Eaton Intelligent Power Limited Arrangement for working a tube end
CN108724040B (en) * 2017-04-21 2024-03-22 丹佛斯动力系统Ii技术有限公司 Device for machining pipe ends
US10940521B2 (en) 2017-06-29 2021-03-09 Milwaukee Electric Tool Corporation Swage tool
US11717876B2 (en) 2017-06-29 2023-08-08 Milwaukee Electric Tool Corporation Swage tool
CN110479826A (en) * 2019-07-26 2019-11-22 中国航发贵州黎阳航空动力有限公司 A kind of tooling for the flaring of aero-engine Thin-Wall Outer Casing sealing device
CN110605338A (en) * 2019-10-09 2019-12-24 格力电器（重庆）有限公司 Automatic throat device that expands of copper pipe
CN113369394A (en) * 2021-05-21 2021-09-10 新乡市博威机械有限公司 Horizontal type pipe expander with efficient cooling mechanism

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Publication number Publication date
DE3865223D1 (en) 1991-11-07
EP0284773B1 (en) 1991-10-02
EP0284773A3 (en) 1990-02-28
DE8702934U1 (en) 1987-04-09
ES2025714T3 (en) 1992-04-01

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